Description
Ambco 1122 Screen-Ear Portable Audiometer 250-8000 Hz 0-80dB Hearing Screening
The Ambco 1122 is a portable pure-tone screening audiometer designed for rapid hearing threshold testing in field or occupational settings. Built around two large rotary controls — a Hearing Threshold Level dial and a Frequency selector — it allows the tester to step through eight discrete frequencies and determine a subject's hearing threshold in each ear independently via hand-activated Right and Left Ear response switches. The unit mounts inside a fold-up, lightweight carry case lined in green felt, with the headphones stored in the lower tray for transport.
Specifications & What's Included
- Manufacturer: Ambco Electronics, Los Angeles, California
- Model: 1122 ("Screen-Ear" series)
- Power: 117 V AC, 60 Hz, 12 Watts
- Test frequencies: 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz
- Hearing threshold range: 0 to 80 dB HL
- Ear selection: hand-activated Right (O) and Left (X) switches
- Front panel controls: Hearing Threshold Level knob, Frequency knob, Tone/Comp switches, power indicator
- Patent: U.S. Pat. 3,007,002
- Included: audiometric headphones, fold-up carry case with metal corner guards and latch
- Not included: operator manual, calibration certificate, or additional peripherals
Applications
The Ambco 1122 Screen-Ear was designed for occupational hearing conservation programs, industrial pre-employment screening, and field audiometry where portability matters. Audiometers of this type are used to perform pure-tone air conduction threshold tests — the standard method for detecting noise-induced hearing loss and monitoring hearing levels over time. The Screen-Ear name reflects its intended role as a fast, portable screening tool rather than a full diagnostic audiometer. Models like the 1122 were widely used by occupational health nurses, industrial hygienists, and hearing conservation specialists from the 1960s through the 1980s, particularly in manufacturing and military environments subject to OSHA and NIOSH hearing conservation regulations. This unit has been tested and confirmed to produce tones at all eight frequencies. It has not been recently calibrated and will require calibration before use in any clinical, regulatory, or OSHA-compliant testing program.
This Ambco 1122 Screen-Ear Portable Audiometer has been tested and confirmed to produce tones at all eight frequency steps (250–8000 Hz). However, it has not been recently calibrated and will require calibration before use in a clinical or regulatory context. As is standard for used medical equipment, we do not warranty or refurbish this item. No manual or peripherals are included — the unit ships with the headphones and fold-up carry case shown in the photos. The case and instrument show normal wear consistent with portable field use. Please view our photo set and contact us if you have any questions.
Thanks for your interest. Recycled Goods Inc., Ventura, CA.
FDA Regulation and Certification: The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not purchase this item unless you are an authorized purchaser. If the item is subject to FDA regulation, we will verify your status as an authorized purchaser of this item before shipping.
Upon receipt, it is the BUYER'S responsibility to have this instrument checked and certified for use by a qualified Technician prior to placing it into use or service.
Warranty Information
Additional Information
Brand: |
Ambco |
Model: |
1122 |
MPN: |
1122 |
Type: |
Portable Pure-Tone Audiometer |
SKU: |
9639 |
Seller Notes: |
Includes headphones and fold-up carry case. No manual or peripherals included. |
Country/Region of Manufacture: |
United States |
Form Factor: |
Portable / Carry Case |
Power Requirements: |
117 V AC, 60 Hz, 12 Watts |
Frequency Range: |
250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz |
Threshold Range: |
0 to 80 dB HL |
Number of Channels: |
2 (Right and Left Ear) |
Hearing Test Type: |
Pure-Tone Air Conduction Screening |
Calibration Status: |
Not recently calibrated — requires calibration before clinical use |
Compatible With: |
Standard audiometric headphones (included) |
Patent: |
U.S. Pat. 3,007,002 |
Condition Notes: |
This Ambco 1122 Screen-Ear Portable Audiometer has been tested and produces tones at all frequencies (250–8000 Hz). Not recently calibrated — calibration required before clinical use. No warranty or refurbishment. No manual. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |